CN103410630B - Diesel engine cylinder head cover - Google Patents

Diesel engine cylinder head cover Download PDF

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Publication number
CN103410630B
CN103410630B CN201310281074.2A CN201310281074A CN103410630B CN 103410630 B CN103410630 B CN 103410630B CN 201310281074 A CN201310281074 A CN 201310281074A CN 103410630 B CN103410630 B CN 103410630B
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China
Prior art keywords
cylinder head
head cover
diesel engine
threaded bush
hole
Prior art date
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CN201310281074.2A
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Chinese (zh)
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CN103410630A (en
Inventor
包向东
张振平
任武超
向本杰
梁德浦
王羽
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN201310281074.2A priority Critical patent/CN103410630B/en
Publication of CN103410630A publication Critical patent/CN103410630A/en
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Abstract

The invention discloses a kind of diesel engine cylinder head cover.This diesel engine cylinder head cover comprises: cylinder head cover body, is located in cylinder head by mounting flange bottom it; Through hole installed by oil sprayer, it is up big and down small shoulder hole structure, comprise: the installation deep gouge being positioned at upside and the threaded bush's perforation being positioned at downside, high-pressure oil pipe seal ring coordinates with threaded bush's perforated interval, and with installation deep gouge and threaded bush's connection ladder surface end face seal of boring a hole; Cylinder head cover gasket seal locating slot, it is opened on the mounting flange face of cylinder head cover body.This diesel engine cylinder head cover is simple and reasonable, being end face seal, reducing processing and assembling requirement, and improve sealing reliability by high-pressure oil pipe threaded bush and oil sprayer being installed the radial snug fit seal en-hancement of through hole.

Description

Diesel engine cylinder head cover
Technical field
The present invention relates to engine art, particularly a kind of diesel engine cylinder head cover.
Background technique
Valve mechanism cover is to protect cylinder head inner body to occur to pollute the part damaging and prevent oil and gas leakage.The oil sprayer that existing oil sprayer high-pressure oil pipe is located in valve mechanism cover by high-pressure oil pipe threaded bush is installed in through hole, high-pressure oil pipe seal ring is set in outside high-pressure oil pipe threaded bush, itself and oil sprayer are installed between through hole and are adopted radial snug fit to seal, sealing mode requires high to the assembling coaxality between valve mechanism cover and seal ring, assembling difficulty, slightly just there is oil impregnate phenomenon in deviation, and in vibration environment, valve mechanism cover can not fit tightly with seal ring, makes engine oil leakage.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, and provide a kind of simple and reasonable, the diesel engine cylinder head cover adopting the end face seal of Spielpassung between through hole and high-pressure oil pipe seal ring installed by oil sprayer.
For achieving the above object, according to the invention provides a kind of diesel engine cylinder head cover, comprising:
Cylinder head cover body, is located in cylinder head by mounting flange bottom it;
Through hole installed by oil sprayer, it is up big and down small shoulder hole structure, comprise: the installation deep gouge being positioned at upside and the threaded bush's perforation being positioned at downside, high-pressure oil pipe seal ring coordinates with threaded bush's perforated interval, and with installation deep gouge and threaded bush's connection ladder surface end face seal of boring a hole;
Cylinder head cover gasket seal locating slot, it is opened on the mounting flange face of cylinder head cover body.
In technique scheme, threaded bush's perforation is (1 ~ 1.5) mm with the matching gap of high-pressure oil pipe seal ring.
In technique scheme, the degree of depth of cylinder head cover gasket seal locating slot is 4.5 ± 0.1mm, and wide is 3.8 (+0.25,0) mm.
In technique scheme, the upper left side that through hole is opened in cylinder head cover body installed by oil sprayer.
Compared with prior art, the present invention has following beneficial effect: diesel engine cylinder head cover is simple and reasonable, being end face seal by high-pressure oil pipe threaded bush and oil sprayer being installed the radial snug fit seal en-hancement of through hole, reducing processing and assembling requirement, and improve sealing reliability.The flange mating face coordinated with cylinder head in valve mechanism cover in addition arranges cylinder head cover gasket seal locating slot, improves the sealing reliability that valve mechanism cover coordinates with cylinder head.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of diesel engine cylinder head cover of the present invention;
Fig. 2 is the assembly structure schematic diagram of diesel engine cylinder head cover of the present invention;
Description of reference numerals:
1-cylinder head cover body, through hole installed by 11-oil sprayer, and 12-seals locating slot, 2-oil sprayer, 21-high-pressure oil pipe threaded bush, 22-high-pressure oil pipe seal ring, 3-valve mechanism cover pad, 4-cylinder head.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, "left", "right", " front " and " reverse side " all with the direction shown in each figure for benchmark, these words being used for limiting direction are only used to be convenient to illustrate, do not represent the restriction to the concrete technological scheme of the present invention.
Diesel engine cylinder head cover of the present invention is simple and reasonable, being end face seal, reducing processing and assembling requirement, and improve sealing reliability by high-pressure oil pipe threaded bush and oil sprayer being installed the radial snug fit seal en-hancement of through hole.The flange mating face coordinated with cylinder head in valve mechanism cover in addition arranges cylinder head cover gasket seal locating slot, improves the sealing reliability that valve mechanism cover coordinates with cylinder head.
As shown in Figure 1, the concrete structure of this diesel engine cylinder head cover comprises: cylinder head cover body 1, and the oil sprayer be opened in this cylinder head cover body 1 installs through hole 11 and sealing locating slot 12, wherein, the upper left side that through hole 11 is opened in cylinder head cover body 1 installed by oil sprayer, for wearing oil sprayer high-pressure oil pipe by high-pressure oil pipe threaded bush, and keep high-pressure oil pipe threaded bush and oil sprayer that through hole 11 is installed by high-pressure oil pipe seal ring sealing.Sealing locating slot 12 is opened on the flange mating face that cylinder head cover body 1 coordinates with cylinder head, for fixed air cylinder head cover pad, thus ensure that valve mechanism cover and cylinder head cover gasket seal, and be conducive to the producer's convenient installation valve mechanism cover pad, pass through efficiency of assembling.
Through hole 11 installed by oil sprayer is up big and down small shoulder hole structure, comprise: the installation deep gouge being positioned at upside and the threaded bush's perforation being positioned at downside, wherein, threaded bush's perforation is (1 ~ 1.5) mm with the matching gap of high-pressure oil pipe seal ring, the strict coaxality requirement of through hole 11 installed by the oil sprayer eliminating high-pressure oil pipe seal ring and valve mechanism cover, is beneficial to the producer and installs; And high-pressure oil pipe threaded bush installs the high-pressure oil pipe seal ring of installing deep gouge on the upside of through hole 11 compress being laid in oil sprayer to installing the ladder surface that deep gouge and threaded bush bore a hole, achieve the end face seal that through hole 11 installed by high-pressure oil pipe threaded bush and oil sprayer, high-pressure oil pipe is sealed more reliable.
Sealing locating slot 12 is opened on the flange mating face that cylinder head cover body 1 coordinates with cylinder head, its degree of depth is 4.5 ± 0.1mm, wide is 3.8 (+0.25,0) mm, during assembling, the compressibility that valve mechanism cover pad and sealing locating slot 12 coordinate rear formation certain and fill factor, thus ensure that valve mechanism cover and cylinder head cover gasket seal, improve the sealing reliability that cylinder head cover body 1 coordinates with cylinder head.In addition, design sealing locating slot 12 in valve mechanism cover, is conducive to the producer's convenient installation valve mechanism cover pad.
As shown in Figure 2, during assembling, oil sprayer 2 is arranged in valve mechanism cover, be installed to oil sprayer install in through hole 11 for the high-pressure oil pipe of its fuel feeding is worn by high-pressure oil pipe threaded bush 21, high-pressure oil pipe seal ring 22 is set in outside high-pressure oil pipe threaded bush 21, by high-pressure oil pipe threaded bush, just it is pressed in oil sprayer installation through hole 11, itself and oil sprayer are installed, and ladder surface that installation deep gouge on the upside of through hole 11 and threaded bush bore a hole compresses, to realize the end face seal that through hole 11 installed by high-pressure oil pipe threaded bush and oil sprayer, improve the sealing reliability of high-pressure oil pipe.
In addition, valve mechanism cover pad 3 is arranged in sealing locating slot 12, when cylinder head cover body 1 is assembled in cylinder head 4, the compressibility that valve mechanism cover pad 3 and sealing locating slot 12 coordinate rear formation certain and fill factor, thus ensure that cylinder head cover body 1 and valve mechanism cover pad 3 seal, improve the sealing reliability that cylinder head cover body 1 coordinates with cylinder head 4.In addition, design sealing locating slot 12 in valve mechanism cover, is conducive to the producer's convenient installation valve mechanism cover pad.
To sum up, this diesel engine cylinder head cover is simple and reasonable, being end face seal, reducing processing and assembling requirement, and improve sealing reliability by high-pressure oil pipe threaded bush and oil sprayer being installed the radial snug fit seal en-hancement of through hole.The flange mating face coordinated with cylinder head in valve mechanism cover in addition arranges cylinder head cover gasket seal locating slot, improves the sealing reliability that valve mechanism cover coordinates with cylinder head.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Claims (4)

1. a diesel engine cylinder head cover, is characterized in that, comprising:
Cylinder head cover body, is located in cylinder head by mounting flange bottom it;
Through hole installed by oil sprayer, it is up big and down small shoulder hole structure, comprise: the installation deep gouge being positioned at upside and the threaded bush's perforation being positioned at downside, high-pressure oil pipe seal ring coordinates with described threaded bush's perforated interval, and the connection ladder surface end face seal of boring a hole with described installation deep gouge and threaded bush;
Cylinder head cover gasket seal locating slot, it is opened on the mounting flange face of described cylinder head cover body.
2. diesel engine cylinder head cover according to claim 1, is characterized in that: described threaded bush's perforation is 1 ~ 1.5mm with the matching gap of high-pressure oil pipe seal ring.
3. diesel engine cylinder head cover according to claim 1, is characterized in that: the degree of depth of described cylinder head cover gasket seal locating slot is 4.5 ± 0.1mm, and wide is 3.8 0 + 0.25mm.
4. diesel engine cylinder head cover according to any one of claim 1 to 3, is characterized in that: the upper left side that through hole is opened in cylinder head cover body installed by described oil sprayer.
CN201310281074.2A 2013-07-05 2013-07-05 Diesel engine cylinder head cover Active CN103410630B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310281074.2A CN103410630B (en) 2013-07-05 2013-07-05 Diesel engine cylinder head cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310281074.2A CN103410630B (en) 2013-07-05 2013-07-05 Diesel engine cylinder head cover

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CN103410630A CN103410630A (en) 2013-11-27
CN103410630B true CN103410630B (en) 2015-10-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820310A1 (en) * 1998-05-07 1999-11-11 Mann & Hummel Filter Internal combustion engine cylinder head covers
CN2605392Y (en) * 2003-03-17 2004-03-03 长安汽车(集团)有限责任公司 Cylinder head casing for multi cylinder internal combustion engine
CN200978752Y (en) * 2006-11-09 2007-11-21 广西玉柴机器股份有限公司 Bushing structure of diesel cylinder lid
CN201273242Y (en) * 2008-08-12 2009-07-15 广西玉柴机器股份有限公司 Fastening structure of oil ejector
CN201925038U (en) * 2010-12-31 2011-08-10 潍柴动力西港(潍坊)新能源发动机有限公司 Cylinder head for gas engine
CN203362334U (en) * 2013-07-05 2013-12-25 广西玉柴机器股份有限公司 Cylinder head cover of diesel engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11173423A (en) * 1997-12-10 1999-06-29 Nok Corp Sealing device
JPH11270437A (en) * 1998-03-24 1999-10-05 Kubota Corp Fuel injection type engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19820310A1 (en) * 1998-05-07 1999-11-11 Mann & Hummel Filter Internal combustion engine cylinder head covers
CN2605392Y (en) * 2003-03-17 2004-03-03 长安汽车(集团)有限责任公司 Cylinder head casing for multi cylinder internal combustion engine
CN200978752Y (en) * 2006-11-09 2007-11-21 广西玉柴机器股份有限公司 Bushing structure of diesel cylinder lid
CN201273242Y (en) * 2008-08-12 2009-07-15 广西玉柴机器股份有限公司 Fastening structure of oil ejector
CN201925038U (en) * 2010-12-31 2011-08-10 潍柴动力西港(潍坊)新能源发动机有限公司 Cylinder head for gas engine
CN203362334U (en) * 2013-07-05 2013-12-25 广西玉柴机器股份有限公司 Cylinder head cover of diesel engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
既密封又降噪的新型缸盖罩壳设计;王兆煖等;《柴油机设计与制造》;19970331(第1期);第23-25页 *

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